1: acetic anhydride / Heating 2: 15 g / aluminium chloride / nitrobenzene; various solvent(s) / Heating 3: 12 g / hydrogen / palladised charcoal / Heating 4: 3 g / P2O5, H3PO4 / 1.) heating, 4 h, 2.) 120-130 deg C, 10 min 5: 2 g / LiAlH4 / tetrahydrofuran / 1.) room temperature, 2 h, 2.) reflux, 6 h 6: Pd-C / 380 - 390 °C View Scheme